
/**
 * Learn Java from https://www.liaoxuefeng.com/
 * 
 * @author liaoxuefeng
 */
public class Main {

	public static void main(String[] args) {
		// TODO: 给一个有工资收入和稿费收入的小伙伴算税:
		Income[] incomes = new Income[] { new Income(3000), new SalaryIncome(7500), new RoyaltyIncome(12000) };
		double total = 0;
		// TODO:
		for (Income income: incomes) {
          total = total + income.getTax();
     }
		System.out.println(total);
	}

//	public static double totalTax(Income... incomes) {
//        double total = 0;
//        for (Income income: incomes) {
//            total = total + income.getTax();
//        }
//        return total;
//    }
}
